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13012020200 = 2352472113781
BaseRepresentation
bin11000001111001001…
…11010101111101000
31020120211102010002002
430013210322233220
5203122034121300
65551100430132
7640310226644
oct140744725750
936524363062
1013012020200
115577a45403
122631848348
1312c4a1cc4a
148b61b7c24
155125285d5
hex30793abe8

13012020200 has 48 divisors (see below), whose sum is σ = 30261550860. Its totient is φ = 5203328000.

The previous prime is 13012020199. The next prime is 13012020209. The reversal of 13012020200 is 202021031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5396665444 + 7615354756 = 73462^2 + 87266^2 .

It is not an unprimeable number, because it can be changed into a prime (13012020209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 937310 + ... + 951090.

Almost surely, 213012020200 is an apocalyptic number.

13012020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012020200 is an abundant number, since it is smaller than the sum of its proper divisors (17249530660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13012020200 is a wasteful number, since it uses less digits than its factorization.

13012020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518 (or 18509 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 13012020200 its reverse (202021031), we get a palindrome (13214041231).

The spelling of 13012020200 in words is "thirteen billion, twelve million, twenty thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 4721 9442 13781 18884 23605 27562 37768 47210 55124 68905 94420 110248 118025 137810 188840 236050 275620 344525 472100 551240 689050 944200 1378100 2756200 65060101 130120202 260240404 325300505 520480808 650601010 1301202020 1626502525 2602404040 3253005050 6506010100 13012020200